Added more tests

src/arm/Compare_test.go

@@ -27,3 +27,19 @@ func TestCompareRegisterNumber(t *testing.T) {
 		assert.DeepEqual(t, code, pattern.Code)
 	}
 }
+
+func TestCompareRegisterRegister(t *testing.T) {
+	usagePatterns := []struct {
+		Left  cpu.Register
+		Right cpu.Register
+		Code  uint32
+	}{
+		{arm.X0, arm.X1, 0xEB01001F},
+	}
+
+	for _, pattern := range usagePatterns {
+		t.Logf("cmp %s, %s", pattern.Left, pattern.Right)
+		code := arm.CompareRegisterRegister(pattern.Left, pattern.Right)
+		assert.DeepEqual(t, code, pattern.Code)
+	}
+}